Reservoir · Ohio · United States · USACE CWMS
Senecaville Lake
73.4% full
Capacity
77.19 hm³
Volume stored
57 hm³
Coordinates
39.925°N, 81.434°W
Last updated
2026-09-11
Current fill
73.4%vs 7 days ago
-5.6%losing
vs 1 year ago
N/A7-day trend
↓falling
Data source: USACE CWMS — US Army Corps of Engineers — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. Last reading: 2026-09-11.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.925, -81.434 · Open in Google Maps
About Senecaville Lake
As of September 11, 2026, Senecaville Lake is filled to 73.4% of its total capacity, holding roughly 57 hm³ of water out of a maximum 77 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 5.6 percentage points.
Across the readings we hold for Senecaville Lake — 47 data points between July 27, 2026 and September 11, 2026 — the level has ranged from a low of 72.1% (July 30, 2026) to a high of 100.0% (August 24, 2026).
It is operated by USACE primarily for multiple purposes. It lies within the Ohio basin at 39.925°N, 81.434°W.
Key facts
- Current fill level
- 73.4%
- Water stored
- 57 hm³
- Total capacity
- 77 hm³
- 7-day change
- ▼ 5.6 pts
- Primary use
- Multipurpose
- River basin
- Ohio
- Operator
- USACE
- Coordinates
- 39.925°N, 81.434°W
- Last updated
- September 11, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 11 Sep 2026 | 73.4% | 57 |
| 10 Sep 2026 | 73.4% | 57 |
| 9 Sep 2026 | 72.4% | 56 |
| 8 Sep 2026 | 73.0% | 56 |
| 7 Sep 2026 | 74.2% | 57 |
| 6 Sep 2026 | 76.1% | 59 |
| 5 Sep 2026 | 77.8% | 60 |
| 4 Sep 2026 | 79.0% | 61 |
| 3 Sep 2026 | 80.7% | 62 |
| 2 Sep 2026 | 82.6% | 64 |
| 1 Sep 2026 | 84.5% | 65 |
| 31 Aug 2026 | 86.6% | 67 |